Improvement in wood-lathes



ALBERT PRIES o HENRV ARND.

Improvement in Wood Lathes.

vPatented Novl` 28, 1871.

UNITED 'raras FIG IMPROVEMENT IN WOOD-LATH ES.

Specification forming part of Letters Pat-ent No. 121,417, dated November 2S, 1871.

To all whom it may concern.-

Beit known that we, ALBERT PRIES and HEN- RY ARND, both of St. Louis, county of St. Louis and State of Missouri, have made certain new and useful Improvements in Machines for Cutting Rope-Moldings and. Turning Irregular Forms, and we do hereby declare that the following is a full and true description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon.

The improvements here presented relate, first, to the peculiar adjustable construction and a-rrangement of frames supporting operating parts, forming lathes, in such a manner that the cuttertools shall cut obliquely to the material fed and also be adjusted to cut the various pitch and diameter of moldings to be formed 5 secondly7 in combination with said lathes and their parts, the arrangement of a slidecarriage having' its gearing devices so constructed as to feed the material right or left by a rotary longitudinal move` ment to the cutter-tools; and lastly, to certain detail construction of parts, all of which will now be more fully described.

To enable those herein skilled to make and use our said improvements, we will now more fully describe the same, referring to- Figure 1 as a top plan of feed-carriage, lathes, and belting connections; to Fig. 2 as a front elevation of lathes; and to Fig. 3 as a detail part of slideca-rriage, showing feed-gearing.

Upon a frame, A, is arranged a slide-carriage, B, of the constructive form shown in detail,Fig. 3. To slide said carriage the frame A is provided with a-rack-bar, a, on top, in which a spur-gear,

- b, meshes, and which is secured to a transverse driving-shaft, b', carrying' at its one end a balance-wheel, B', and operated at its opposite end by a proper hand-crank. By turning said handcrank the carriage B is made to .slide on proper rails a of the frame A. The carriage B is further provided with a horizontal feed-shaft, C, operating in journal-bearings c c on proper standards secured to said carriage. (See Fig. 2.) At its end said shaft is provided with a clamp or clutch device suitable to gripe and hold fast the Wooden material. In order that the longitudinal feed motion thus achieved may also at the same time impart a rotary motion to feed-shaft C, the same has a bevel-gear, D, meshing with a second bevel-gear, D', which is keyed to a projecting shaft, d, supported by a bearing, d1, and secured to the side of the carriage B, as shown in Fig. 1. Also, said small shaft d carries a spurgear, d2, fitted to mesh with a lower spur-gear, d3, but secured to shaft b of the carriage. (See Fig. 1 and detail, Fig. 3.) As soon, therefore, as the carriage B is operated to slide the material is fed by a right-rotary-ieed7 motion to the cutter-tools of the lathes. Ale1"t1otaryieed77 motion to produce left77 molding is readily obtained by reversing the position of the bevel-wheel D on shaft O in gear with bevel-gear D. The material to be Worked is thus fed usually to three separate lathes, (more or less can be used,) and constructed and arranged as follows: Each of said lathes consists ofthe upright frames E El, of wood or iron, united by a central cross-piece, E2. (See Figs. 1 and 2.) On top of said frames E E1 is arranged a top piece or bridge-tree, F, mortised at its corner ends ffl so as to lit and be raised or lowered in the similar mortised part of frames E El, as indicated in Fig. l. The bridge-trees F, when raised or lowered, are retained in adjusted position bypassing suitable screws G G secured by proper nuts, through vertical slots e of, Fig. 2. The adjustability of said bridgeetrees supporting' the operating parts now to be described enables us to position the cutter-tools as required in accordance with the different diameters of molding. Each bridge-tree supports the operating devices as follows: We provide each bridge-tree F with an elongated slot or mortise, f2, in which a cutter-standard, H, by its screw IL, is adjustably arranged. l to any adjusted position in the slot f2. A rail, g, guides said standard along bridge-tree. (See Fig. 1.) Each `cutter-standard H forms bearings in which a projecting arbor, I, turns freely by its pulley i, operated by belting connections from power-source. To the end of each arbor I are attached cutter-tools t, of any ordinary form for cutting stuff to a circular section, and as usually employed in machines of this nature. It will be noticed that by unscrewin g nut hf of the cutterstandards H the cutters t" can be adjusted to and from the center, or to cut in central line of any size or diameter of molding, as the bridge-trees F can readily be raised or lowered to suit irregular forms ofany diameter to be produced. In order that the cutters can be arranged to cut obliquely to the material fed, said lathes are adjusted to A nut, hf, secures said cutter-standard any angular position by a screw-bolt, J, passing through a slot, j, in the cross-piece E2, and secured in position by a nut, jz. (See detail, Fig. 2.) By means of said screw-bolt J each lathe may be secured to a bed-plate or to the iioor direct, as preferred. Thus, by simply arranging each lathe in proper angular position the cutters perform their cutting action obliquely. Any pitch of rope-molding or spiral form can be cut; or, by the varied adjustment ofthe cutters, the various moldings, framing, or turning Work can be produced. The material is placed in suitable cylindrical rests or bearings, K K1, that of K being secured to end of carriage-frame A, that of K1 being secured to a proper standard, K2, attached to the floor. In order to avoid any deiiection or depression ofthe material arising from the cutting action of the several tools acting at the saine time, a suitable bridge support may be arranged to span the standard K2 and end of frame A. Upon said bridge the material can rest as it is fed to the action ofthe cutters. To operate the arbor and cutting-tools of each lathe each pulley li is connected by proper belting l l l, and separate pulleys L L L on a shaft, M, arranged to operate in proper journal -bearings in a separate or portable frame. We prefer to arrange said driving and belting devices in a separate frame, so as to be adjustable in accordance with the positions required to operate the adjustable lathes. Said frame and its driving parts are then made to connect with the power-source as usual.

Our said improvements are simple, cheap, and durable in construction, compact, direct-acting, and certain in their operation; also portable in parts for transportation purposes.

Having thus described our said invention, what We claim is The combination of feed-carriage B, having gearing devices constructed as described, with a series ot adjustable frames, E E1, each pivoted by a screw-bolt, J, provided with an adjustable slotted bridge-tree, F, and supporting an adjustable pulley, arbor, and cutter, the wholebeing constructed and arranged in the manner and for the purpose set forth.

In testimony of said invention We have hereunto set our hands.

ALBERT IRIES.

Vitnesses: HENRY ARND.

"WILLIAM W. HERTHEL, ROBERT BURNs. 

